Patents Examined by Charles Hart
  • Patent number: 5464461
    Abstract: A filter assembly for a coolant air stream flowing through an LRU box has a base frame with a large opening superimposed on the perforated top surface of the box. A filter element is superimposed over the opening and a cover having a large opening is hinged to the base frame and latched thereto with its opening aligned with the other opening. The filter assembly is clamped by means of a harness to the LRU box with a clamping band that wraps around one end of the LRU box and one end portion of the base frame simultaneously. Spring tensioned cable sections attach to the band and extend diagonally along the sides of the LRU box and then through eyelets on the opposite end portion of the base frame so the cable develops a vertical component of force for clamping the assembly to the LRU box.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: November 7, 1995
    Assignee: Electronic Cable Specialists, Inc.
    Inventors: Frederick A. Whitson, William K. Siebert, Kenneth B. Raihala
  • Patent number: 5358540
    Abstract: An exhaust cleaner includes a water trough installed in the exhaust piping of a filter hood through which exhaust gas from the filter hood passes, a water heater controlled to heat water in the water trough, a chemical detergent added in water in the water trough, a waste grease collector disposed outside the water trough to collect solid suspension particles from the water trough.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: October 25, 1994
    Inventors: Chang Tsan-Yun, Chen-Shing Wu
  • Patent number: 5352275
    Abstract: An apparatus and process is provided for the production of hot mix asphalt (HMA) by the treatment of virgin material alone or adding reclaimed or recycled asphalt pavement (RAP) of up to 100% of the HMA comprised of reclaimed asphaltic pavement (RAP). The HMA is first heated in either a parallel or a counter flow rotating drum which is supplied with hot combustion gases generated by a remote low NO.sub.x burner. The temperature of hot gases entering the drum is from about 400.degree. to 2,000.degree. F., and the temperature of gases exiting from the drum is from about 130.degree. to 220.degree. F. The HMA material optionally can be subjected to microwave radiation to raise the material to a final temperature, or optionally to only reorient the dipolar molecules of the material without any measurable heating of the material. The exhaust gas is treated and made environmentally safe.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: October 4, 1994
    Assignee: Cyclean, Inc.
    Inventors: Robert Nath, Robert Erickson, John Wiley, Harry Hebard, Michael Miles
  • Patent number: 5352257
    Abstract: A baffle assembly for intercepting paint particles passing through a spray booth is disclosed. The baffle assembly includes an inner plate and an outer plate adjacent each end or edge of the inner plate. The inner plate is comprised of a central planar portion, which is oriented substantially perpendicular to the direction of air flow, and having outer ends which are curved in an upstream direction and inwardly toward one another. Each outer plate includes a curved portion which terminates in a semi-circular portion. The inner plate is received and positioned within the outer plates so that each of its outer ends is substantially surrounded by and equidistant from its adjacent outer plate. In this manner, air flows between the inner plate and the outer plate in a first curved direction and then in a second opposite curved direction.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: October 4, 1994
    Assignee: The Sherwin-Williams Company
    Inventor: Harold R. Powers
  • Patent number: 5352256
    Abstract: An air intake protection device includes a deflector for directing polluted inlet air in a cyclonic motion as it enters a pollution chamber forcing heavier pollutant particles toward the inside wall of the pollution chamber, causing them to fall into a debris collection chamber. Lighter pollutant particles are engaged by a non-planar filter and a second, final filter. Clean, filtered air is thereby forced through a clean air chamber to an air outlet which communicates the clean, filtered air from the device housing.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: October 4, 1994
    Inventors: Ronald D. Stead, Craig M. Blackmer
  • Patent number: 5350441
    Abstract: Improved apparatus and methods for the treatment of boiler flue gas with sulfur trioxide conditioning agent include the beneficial use of catalytic converters that can be located immediately adjacent the injection site for their sulfur trioxide output, that can be individually sized and manufactured for variable required conditioning agent outputs, that can be individually controlled and can provide substantially improved conversion efficiency and that can provide an efficient, flexible, effective and relatively inexpensive multi-boiler flue conditioning system.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: September 27, 1994
    Assignee: Wilhelm Environmental Technologies, Inc.
    Inventor: Robert A. Wright
  • Patent number: 5348563
    Abstract: A ceiling mounted air purifier that provides a high velocity, multi-directional air exhaust pattern that distributes filtered air to all areas of a room which includes a plurality of filters and centrifugal fans. The centrifugal fans are substantially surrounded by baffles which form generally equally spaced exhaust outlets.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: September 20, 1994
    Assignee: Honeywell Inc.
    Inventor: George B. Davis
  • Patent number: 5342423
    Abstract: An air filter apparatus for an HVAC system having a frame with a channel area formed therein and having legs extending into the channel area, and a filter material having a portion received within the channel area. The filter material extends across the frame. The legs of the frame extend so as to exert a compressive force on the edges of the filter material received therebetween. The filter material has a first flexible mesh layer, a fibrous layer, and a second flexible mesh layer formed in a sandwiched configuration. The frame has a T-shaped slot extending longitudinally along an outer surface of the frame. The frame also has a notch formed along a corner of the frame and extends around the frame. A bead of an elastomeric material is received within this notch so as to extend outwardly of the frame.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: August 30, 1994
    Inventor: Andrew A. Taft
  • Patent number: 5342420
    Abstract: A dust and dirt collecting apparatus for a vacuum cleaner includes a porous bag defining a dust and dirt collecting enclosure. A releasing strip is disposed on an outer surface of the bag for releasing an active agent (such as a deodorant) into air passing through the vacuum cleaner. A covering associated with the releasing strip is switchable from a first condition blocking release of the active agent by the releasing strip to a second condition enabling release of the active agent by the releasing strip.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: August 30, 1994
    Assignee: Home Care Industries, Inc.
    Inventor: Mark D. Bosses
  • Patent number: 5342422
    Abstract: Apparatus for separating particles, in particular oil or fat particles, out of an airstream flowing through the apparatus.Apparatus of this kind are particularly used in large kitchens in order to separate fat particles out of the exhaust air. To reduce the number of required parts while maintaining the high degree of separation of particles and maintaining the total height of the apparatus, a special lamella shape (1,2) is described which consists in cross section in its middle region of a circular arcuate piece which extends over 120.degree. to 130.degree. and of two parallel straight longitudinal edges (1a,2a). On account of the special lamella shape (1,2), the forming of a row of parallel lamellas out of a metal sheet is possible while maintaining the high degree of separation and maintaining the small total height of the apparatus.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: August 30, 1994
    Assignee: Wimbock Besitz GmbH
    Inventor: Peter Wimbock
  • Patent number: 5340383
    Abstract: In accordance with the method of this invention, sulfur is removed from the gas stream exiting a sulfur storage tank through condensation and impingement of droplets and/or particles of elemental sulfur on the baffles and wall(s) of indirectly cooled scrubber-condenser. In order to effect the melting and return to the liquid sulfur storage tank of any sulfur collected on the baffles and wall(s) of the scrubber-condenser, said baffles and wall(s) are periodically heated, preferably with indirect steam. The scrubber-condenser apparatus of this invention is designed to effect the condensation and solidification of sulfur from the gas stream and to maximize the impingement of sulfur droplets and particles upon its baffles and internal wall(s) by repeatedly changing the flow direction of said gas stream. The scrubber-condenser is vertically mounted on a liquid sulfur storage tank and is connected directly to a vent located on top of the tank.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: August 23, 1994
    Assignee: Freeport-McMoran Inc.
    Inventor: James T. Womack
  • Patent number: 5338339
    Abstract: An apparatus and process are provided for removing particles from an air stream by filtration, particularly wood particles which have been treated with a resinous material, and which therefore are somewhat sticky. The apparatus is a filter system in which an air stream carrying the resinated particulates is directed upwardly through a set of filter elements which are arranged in a generally sawtooth pattern. The filter elements include a relatively large mesh screen to which the sticky particulates adhere and form of a filtering layer on the mesh in situ. As the filtering layer grows, its porosity is continually reduced, until it reaches a minimum acceptable level, at which time the filter elements are vibrated to cause a portion of the filtering layer to fall away, leaving a portion of the layer adhering to the filter element. In this way, continuous, high-efficiency filtering of a sticky particulate from an air stream is achieved.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: August 16, 1994
    Assignee: Louisiana-Pacific Corporation
    Inventor: John L. Westphal
  • Patent number: 5338325
    Abstract: A filter cartridge (16) for cleaning the dedusting filter of a silo by means of an air nozzle (26) into which air is blown intermittently and which is disposed above a filter cartridge (16), provided with a filter jacket (18), in the filter 12, characterized in that at least one blanking body (22) is provided in the interior of the filter cartridge (16) and is practically out of contact with the filter jacket (18) of the filter cartridge, said body being closed on all sides or its opening being so positioned in the filter cartridge with respect to the air nozzle (38, 40) that no air can be bloom into it through the air nozzle (38, 40).
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: August 16, 1994
    Inventor: Karl-Heinz Stanelle
  • Patent number: 5338340
    Abstract: An odor-removing filter approaching the carbon-particle loading of a filled filter may be formed by spraying or roll coating the adhesive against one or more faces of a porous, fibrous, air-permeable mat, depositing carbon particles or other odor-removing particles of a size to compliment the void size of the mat on the adhesive coated face or faces of the mat and then driving the particles into the mat and thereafter curing the adhesive to lock the particles into the mat. The adhesive bond of the particles to the mat is improved by working the particles against the adhesive-coated fibers. An overspray of an adhesive may also be utilized to further improve the retention of the particles. So-called "clean filters" may be produced according to the method disclosed, wherein a white, fibrous mat has carbon particles loaded on one face while the opposite face appears white or "clean". An indicator filter notifying the user when the filter becomes grease laden may also be formed following the methods used herein.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: August 16, 1994
    Assignee: D-Mark, Inc.
    Inventors: James W. Kasmark, Jr., Joseph B. Brown, deceased
  • Patent number: 5338341
    Abstract: A separator for removing gases from water. An elongated vortex tube with an interior cylindrical wall houses a concentric separator tube of smaller diameter, leaving a vortex region between them. Perforations through the wall of the separator tube connect the interior of the separator tube to the vortex region. Water containing gas is tangentially injected into the vortex region, flowing downwardly to an exit port. Separated gases in the separator tube collect at its top and are released by a valve.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: August 16, 1994
    Assignee: Claude Laval Corporation
    Inventors: Angelo L. Mazzei, Steven D. Ford
  • Patent number: 5338326
    Abstract: A device for monitoring the hollow filter components employed to filter hot and dusty gases. The components are grouped inside a filter housing (1). The components communicate through supply lines (9) with collectors ( 10). The collectors convey the filtered gas away. The line supplying each group accommodates a lance (15). The lance injects a fluid for sweeping the components clean. A transducer (16) downstream of the filter components detects the pressure of the filtered gas in the line. A change in pressure reveals a malfunction.
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: August 16, 1994
    Assignee: Deutsche Babcock Energie- und Umwelttechnik AG
    Inventors: Werner Jelich, Heiko Rehwinkel, Friedrich Klauke, Dieter Konig, Udo Kalthoff
  • Patent number: 5336285
    Abstract: A textile machine suction device for dust and other pneumatically conveyable waste includes a separator chamber, a negative pressure line discharging waste into the separator chamber, a first filter screen in the separator chamber for separating the waste from an air stream and for collecting the waste, a second filter screen disposed in the separator chamber, and a negative pressure source acting upon the first and the second filter screens. The two filter screens are disposed adjacent one another in a constellation causing an increasing outflow of air through the second filter screen with increasing soiling and impermeability of the first filter screen to the air stream. The negative pressure line forms a rotating air stream in the separator chamber approximately parallel to the first filter screen for forcing the waste and in particular yarn waste into a motion stripping soiling from the first filter screen.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: August 9, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Manfred Grandek, Ferdinand Szucs
  • Patent number: 5336283
    Abstract: A paint mist removing apparatus having a first liquid shooting section formed in a constricted passage of air laden with overspray paint mist. The first liquid shooting section scatters cleaning water from opening edges of a passage inlet of the constricted passage into an air flow passing through said constricted passage. The paint mist removing apparatus further includes an upwardly facing inclined surface for receiving the passing objects under the passage inlet, a downwardly facing surface continuous from a lower edge of the upwardly facing inclined surface, a curved section disposed between the upwardly facing inclined surface and the downwardly facing surface for deflecting the air flowing through the constricted passage toward the downwardly facing surface. The curved section for causing the cleaning water flowing down the upwardly facing inclined surface to scatter again toward the air in the constricted passage under the downwardly facing surface acts as a second liquid shooting section.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: August 9, 1994
    Assignee: Taikisha Ltd.
    Inventor: Satoshi Horisawa
  • Patent number: 5334239
    Abstract: A separation device employing a gas separation filter and swirler vanes for separating gas from a gasliquid mixture is provided. The cylindrical filter utilizes the principle that surface tension in the pores of the filter prevents gas bubbles from passing through. As a result, the gas collects in the interior region of the filter and coalesces to form larger bubbles in the center of the device. The device is particularly suited for use in microgravity conditions since the swirlers induce a centrifugal force which causes liquid to move from the inner region of the filter, pass the pores, and flow through the outlet of the device while the entrained gas is trapped by the filter. The device includes a cylindrical gas storage screen which is enclosed by the cylindrical gas separation filter. The screen has pores that are larger than those of the filters. The screen prevents larger bubbles that have been formed from reaching and interfering with the pores of the gas separation filter.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: August 2, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Hwang Choe, Thomas T. Fallas
  • Patent number: 5334231
    Abstract: A filter retaining device for a furnace having a casing and requiring a filter includes a filter retaining wire for securing the filter over an opening provided in the casing. The retaining device also includes a latch clip and a retainer clip which are each insertable through a corresponding hole in the furnace casing. One end of the filter wire is moveably secured by the retainer clip. The other end of the filter wire has a U-shape formed therein so that it can be easily snapped into and out of the latch clip. Each clip has a pair of flexible barbed detentes so that it may be securely snapped into its corresponding hole.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: August 2, 1994
    Assignee: Carrier Corporation
    Inventors: Timothy J. Waterman, Paul J. Otts